Shop Stools are ruggedly built for lasting service in industrial and shop applications. Frame is electrically seam welded 18-ga., 7/8" O.D. tubular steel. Cross-braced legs are welded into a single unit, while the tubular footrest ring has four spot-welds at each connection for increased rigidity. Self-leveling steel feet. Optional heavy steel backrest adjusts 2" horizontally. Adjustable-height stools have telescoping legs that adjust in 1" increments. Choose either recessed, tempered Masonite® or thick polyfoam padded vinyl seat. Gray enamel frame. 5-year warranty. Meets or exceeds ANSI/BIFMA standards. Made in USA.